What is the likely impact of an OPSEC measure on operational effectiveness, if implemented? What is the probably risk to the mission success (effectiveness) if the unit does not implement the measure? What is the probable risk to the mission success, if an OPSEC measure does not work?
Suffocation is a general term to indicate that form of asphyxia, which is caused by deprivation of oxygen, either due to lack of oxygen in the environment or from obstruction of the air-passages.
Collapse, unconsciousness or syncope lasting only a few seconds and generate only rarely in death. Fainting (syncope) is a disorder of consciousness of short duration which is caused by a temporary lack of blood and oxygen to the brain. If unconsciousness lasts longer than a minute, this is a medical emergency requiring a call from a doctor; loss of consciousness longer can be life-threatening or lifelong sequelae.